If you read the readme!!!.txt you must see:

Catalyst 13.12 is highly recommended for best performance and compatibility!

in your *.bat write like this:


setx GPU_MAX_ALLOC_PERCENT 100
NsXpmMiner.exe -o ypool.net -u USERNAME -p YOURPASSWORD



try also add parametrs to miner string  "-ss 3" or "-ss2"